Product name: b53
2. bluetooth version: v5.3
3. bluetooth chip: zhongke
4. frequency range: 2.402-2.480ghz
5: bluetooth protocol: rx-a2d2 avrcp tx-a2dp
6. device connection: supports one-to-one connection
7: supported format: sbc
8: receiving mode: usb + aux output, supports calls.
9: transmission mode: usb + aux input
product introduction:
1: the b53 is a usb+aux 4-in-1 bluetooth device that supports usb transmit and receive. rx/tx modes can be selected via a toggle switch. it's simple to operate, plug and play, and supports calls in receive mode.